The most commonly agreed-on sign that your Master Cleanse is done, is the pink tongue. Your tongue becomes very white while toxins are being eliminated, much like when you are sick. As the toxins are reduced in numbers, this effect decreases. Some people never get white tongues at all, having had fewer toxins. Another sign it may be time to end the cleanse is when your movements are growing increasingly clear. If you have an overwhelming desire to eat, one that goes beyond the psychological, you should end the cleanse.